Mr. Woops on the British Species of Rosa. 169 
length; and bearing in the following summer bunches of six or 
eight flowers; or in Rosa surculosa, which affords an excellent 
example of these modes of growth, perhaps even of twenty-four 
flowers. In R. arvensis, and still more in some foreign species of 
that tribe, these shoots frequently bear cymes in the same year in 
which they are produced; consisting in R. arvensis of fifteen or 
sixteen flowers; in R. indica of twenty or thirty; in R. moschata, 
as I am informed by my friend Mr. Borrer, who has taken the 
trouble to count them, sometimes as many as two hundred and 
sixty-five. As branches are yearly produced from these surculi, 
their strength diminishes, and the original character of the plant 
returns till new root-shoots make their appearance. "These are 
produced when the plant is partially destroyed; nor do I know 
that they ever occur except in consequence of some injury to the 
original growth. ‘They do not indeed always vary to the extent I 
have described ; but they constantly differ in this manner from 
the other parts of the plant, though not in equal degree. 
In the Latin descriptions no ambiguity can possibly occur from 
the use of the term “foliolum,” as applied to the parts of the 
calyx and those of the leaf. In the English observations I have 
endeavoured to avoid confusion, by calling the first /eafit and the 
latter leaflet, a distinction I did not adopt till I felt the want of 
it. The shape of the leaflet is taken principally from the ter- 
minal one, which I consider as the most perfect; all those of the 
earlier leaves are uncertain in their shape, always rounder than 
the others, sometimes retuse: these are to be rejected, and the 
shape of the leaflet deduced from those PAM later in the 
season. ! 
The stipulæ of all British kor: are linear-decurrent on the 
petiole of the leaf, and generally edged with glands; in some 
VOL. XII. Z species 
